Gemfile in zache-0.12.0 vs Gemfile in zache-0.13.0

- old
+ new

@@ -1,8 +1,8 @@
 # frozen_string_literal: true
 
-# Copyright (c) 2018 Yegor Bugayenko
+# Copyright (c) 2018-2023 Yegor Bugayenko
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the 'Software'), to deal
 # in the Software without restriction, including without limitation the rights
 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
@@ -19,7 +19,15 @@
 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
 source 'https://rubygems.org'
-ruby '2.6.0'
 gemspec
+
+gem 'concurrent-ruby', '1.2.2', require: false
+gem 'minitest', '5.18.0', require: false
+gem 'rake', '13.0.6', require: false
+gem 'rdoc', '6.5.0', require: false
+gem 'rubocop', '1.51.0', require: false
+gem 'rubocop-rspec', '2.22.0', require: false
+gem 'simplecov', '0.22.0', require: false
+gem 'threads', '0.3.0', require: false